set up one's bristles

Verb

To bristle; to react in a defensive and bad-tempered manner.

Japanese Meaning

怒りや防衛本能から、毛が逆立つような反応（怒りや反発の態度を取る） / すぐに攻撃的、あるいは不機嫌な態度に出る

One can't help but set up one's bristles when accused unfairly.

不当に非難されると、人はつい毛を逆立ててしまう。

Sense（1）

To bristle; to react in a defensive and bad-tempered manner.

sets up one's bristles

（ present singular third-person ）

setting up one's bristles

（ participle present ）

set up one's bristles

（ participle past ）

set up one's bristles

（ past ）